Fixed double free corruption in occlientbasicops handler

Fixed double free corruption in occlientbasicops handler

The scenario described in IOT-554 caused memory corruption in occlientbasicops
where OICFree is called twice in order to clean up ResourceNode List.
Removing explicit free calls in freeResourceList fixes the problem described
in IOT-554.

Change-Id: If5be1104cfb8804846f8fd684d59b018fb0401ba
Signed-off-by: Moumita Ray <moumita.ray@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1244
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Erich Keane <erich.keane@intel.com>